This is the moment a gang used a stolen car to mow down a defenceless teenager before he was knifed to death in a horrific Valentine's Day attack.

Lord Promise Nkenda was walking along the pavement in Newham, east London, when the BMW containing five youths accelerated towards him.

He was hit by the car then pursued by four of the boys on foot into an alleyway where he was repeatedly stabbed in the head, back and chest in seconds.

Paramedics battled to save his life but Promise was pronounced dead at the scene at about 8.40pm on Wednesday February 14 last year.

Prosecutor Alan Kent QC had said that Promise was deliberately run down by a car containing 18-year-olds Shemar Dawes, Ephraim Idris, Anton Muir, Ishaq Abdille and a 15-year-old boy who cannot be named for legal reasons.

The moment five teenagers used a stolen BMW car to run down Lord Promise Nkenda (Image: SWNS.COM)

Promise Nkenda was rammed by the car before being set upon with knives (Image: Facebook)